TY - JOUR
T1 - Gyrodactylus pictae n. sp (Monogenea: Gyrodactylidae) from the Trinidadian swamp guppy Poecilia picta Regan, with a discussion on species of Gyrodactylus von Nordmann, 1832 and their poeciliid hosts
AU - Cable, J.
AU - van Oosterhout, C.
AU - Barson, N.
AU - Harris, P. D.
PY - 2005/3
Y1 - 2005/3
N2 - Gyrodactylus pictae n. sp. is recorded from Poecilia picta in heterospecific shoals with the guppy P.␣reticulata in Northern Trinidad. G. pictae is morphologically similar to G. turnbulli Harris, 1986, but the hamuli and marginal hooks are slightly smaller and more gracile. The toe and the point of the marginal hook have a distinctly different shape, providing the best morphological characters for distinguishing the two species. The rDNA ITS1 and ITS2 sequences differ from those of G. turnbulli (the closest relative) by >5, suggesting that these two taxa are not sibling species. The origin of the two species on poeciliids of the subgenus Micropoecilia is discussed, and it is suggested that this may represent a case of host–parasite co-evolution.
AB - Gyrodactylus pictae n. sp. is recorded from Poecilia picta in heterospecific shoals with the guppy P.␣reticulata in Northern Trinidad. G. pictae is morphologically similar to G. turnbulli Harris, 1986, but the hamuli and marginal hooks are slightly smaller and more gracile. The toe and the point of the marginal hook have a distinctly different shape, providing the best morphological characters for distinguishing the two species. The rDNA ITS1 and ITS2 sequences differ from those of G. turnbulli (the closest relative) by >5, suggesting that these two taxa are not sibling species. The origin of the two species on poeciliids of the subgenus Micropoecilia is discussed, and it is suggested that this may represent a case of host–parasite co-evolution.
U2 - 10.1007/s11230-004-6348-4
DO - 10.1007/s11230-004-6348-4
M3 - Article
VL - 60
SP - 159
EP - 164
JO - Systematic Parasitology
JF - Systematic Parasitology
SN - 0165-5752
IS - 3
ER -